2 HS3 Science Team Meeting - BWI - October 19-20, 2010HAMSR/Lambrigtsen HAMSR Status Update (2015) Bjorn Lambrigtsen (HAMSR PI) Shannon Brown (HAMSR Task Mgr) JPL/Caltech HS3 Science Team Meeting – Mountain View – May 5 – 7, 2015HAMSR/Lambrigtsen © 2015 California Institute of Technology. Government sponsorship acknowledged National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California

Direct measurements: Brightness temperatures 25 channels ~ 0.5 K cal. accuracy Derived vertical profiles: Surface to aircraft altitude 1-2 km vertical resolution 1-2 km horizontal resolution Super-critical sampling Temperature profiles Dual bands (50 & 118 GHz) Water vapor profiles More accurate than AMSU-B Liquid water profiles 3 bands  V. profile Reflectivity profiles Experimental product             : Identical to AMSU  : Equivalent to AMSU            HAMSR Measurement Overview Three spectral bands 25 channels Weighting functions Cross-track scanner Products Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Sounders are normally used to determine thermodynamic structure: Retrieval of 3-D atmospheric temperature, water vapor and cloud liquid water profiles using optimal estimation inversion approach Good agreement with dropsonde observations Vertical resolution (averaging kernels) is 2-3 km Thermodynamics: Accurate soundings Relative Humidity (%) mean: -0.5 %  = 16.5 % Absolute Humidity (g/m 3 ) Temperature (K) Precipitable Water Vapor (mm) mean: -0.1K  = 2 K mean: mm  = 3.0 mm 50 dropsonde comparisons during HS3 over a wide variety of atmospheric conditions Dropsonde profiles smoothed vertically to match HAMSR vertical resolution HAMSR website contains validation reports for each flight Reports include comparison to MERRA and dropsondes T,q,RH 3 Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Very few flights in 2013 None in 2014 Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

CalWater2: Jan-Feb 2015 Below: Atmospheric river, 2/6/2015 Jet Propulsion Laboratory California Institute of Technology Pasadena, California Scattering index TPW 113 GHz HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Data: All products delivered 1) 2) 3)ftp:// hs3.nsstc.nasa.gov Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

HAMSR 2013 HS3 Realtime Products Flights During August 20 – September Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

HAMSR provides KML files to mission tools and JPL Portal for display Display swath products (e.g. TB imagery, derived products) User chooses between complete flight, past 60 minutes or past 30 minutes and relative or absolute color scale Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

HAMSR KML files available as a bundle in mission tools Expanding menu used to select between display options Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Recent Display Updates Storm centric gridded plots added to KML display – Plots placed as overlays over North America – Allows visualization of full dataset avoiding problem of track overlays in swath display TC center positions and times for each eye overpass added as placemarks – HAMSR operator records TC center coordinates after each eye overpass using real-time imagery – KML file generated with TC center locations for each pass – Clicking on placemark provides pop-up display with plots and text information for that overpass Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Swath data along flight path 75km storm relative gridded image 350km storm relative gridded image Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

TC center locations for each eye overpass Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Clicking on placemark brings up gridded images for that overpass 55.5 GHz TB, 8 km and 12 km reflectivity shown in this example Information about overpass shown as text Time, Lat, Lon [250mb] and 55.5 [150mb] TB anomaly Experimental minimum central pressure derived from warm anomaly Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

All data within 30 minutes of overpass shown, so rapid overpasses will fill in 50km grid as shown in this Karl example Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Planned Products and Documentation User guide with full product descriptions will be distributed prior to science flights Planned products: – Window channel TB imagery (50.3, 113 and 166 GHz) – Total precipitable water and cloud liquid water (non-precipitating conditions) – Upper air TB imagery (54.94 and 55.5 GHz and 118 GHz equivalent channels) – Derived Reflectivity (3-levels; e.g. 6, 8 and 12km) Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Processing System Upgrade Microwave Integrated Retrieval System - MIRS Developed at NOAA NESDIS by Sid Boukabara’s group MIRS is now NOAA’s primary MW retrieval system CRTM has been adapted for HAMSR MIRS implementation for HAMSR has not yet been done New system under development at JPL Will include scattering  Retrievals in the presence of rain Optimal estimation methodology Forward model: CRTM Also looking at RTTOV Solver: Under development Evaluating solving in geophysical space vs. EOF space Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen

Instrument Status: Green Upgrade 50-GHz receiver Using latest LNA/MMIC technology Current receiver is perfectly adequate, but expect significantly better sensitivity (noise performance) with the new receiver We hope to get it done before 2014 campaign Replacement transparent to users (but with better data) Ready to fly again! Jet Propulsion Laboratory California Institute of Technology Pasadena, California HS3 Science Team Meeting – Mountain View – May 5-7, 2015HAMSR/Lambrigtsen